Magnifying glass



Dec. 28 1926. 7 1,612,693

E. BAuscH MAGNIFYING GLAS S Filed Oct. 25, 1924 A v 1 IN VEN TOR.zzza/m-dfiflwciz fi w bArroRNEy I Patented Dec. 28, 1926.

UNITED STATES PATENT OFFIQE.

EDWARD BAUSOH, OF ROCHESTER, NEW YORK, ASSIGNOR TO BAUSCH & LOMB OPTI-OAL COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK,

MAGNIFYING GLASS.

Application filed October 25, 1924. Serial No. 745,888.

This invention relates to magnifying glasses, and more particularly tothe pocket variety comprising lens means mounted on adjustably connectedparts adapted to be arranged for supporting the lens in properlyfocussed relation to the object to be viewed and also for foldingcompactly into asmall space when not in use, the chief object of theinvention being to provide an improved character of construction for amagnifying glass of this type by which it may be economic-ally formed ofrelatively thin sheet metal with the parts arranged to fold compactlytogether and in such a manner as to fully protect the lens.

To these and other ends the invention consists in certain improvementsand combinations of parts, all as will be hereinafter more fullydescribed, the novel features being pointed out in the claims at the endof the specification.

In the drawings:

Figure 1 is a top plan view of a magnifying glass embodying the presentinvention with the parts arranged as in use.

Figure 2 is a side elevation of the same as viewed from the left inFigure 1.

Figure 3 is a sectional elevation on the line 3 3 in Figure 1.

Figure 4 is a view similar to Figure 3 but showing the parts inelevation on a reduced scale.

Figure 5 is a side elevation but showing the parts in folded relation.

Figure 6 is a similar View enlarged and in section.

Figure 7 is an enlarged detailed sectional view on the line 77= inFigure 4, showing the pivot construction, and

Figure 8 is a perspective detailed view of a part of the same.

Similar reference numerals throughout the several views indicate thesame parts.

The invention provides a magnifying glass embodying a form ofconstruction for the supporting frame capable of being struck up inasimple and economical manner from relatively thin sheet metal to affordat the same time a substantial degree of strength and stiffness andprovide for compact folding of the frame when not in use with fullprotection for the lens surfaces. This frame consists, generallyspeaking, of three parts, namely, a base plate 10, a supporting plate 11and a lens plate 12 pivotally connected together by advantageouslysimple means as hereafter more fully described.

The base plate is of generally rectangular shape having the marginalportions at oppo site sides thereof turned angularly upward to providestiffening flanges 18 which also serve to provide the means for pivotalconnection with the supporting plate 11' as hereafter described. Thebase plate is also preferably formed at its central portion with anaperture 14-. for viewing the object to be examined, the present glassbeing particularly adapted for testing the weave of fabrics for whichpurpose aperture 1% is given predetermined dimensions to disclose a unitarea of fabric the number of threads in which may be readily countedwhen viewed through the lens.

The supporting plate 11 has the marginal portions at opposite sidesthereof turned angularly toward the rear to provide stiffening flanges15 each of which is extended at its ends as at 16 and 17 respectivelyfor pivotal connection with the base and lens plates at l'r' -and 17respectively by means described hereafter. As shown, the flangeextensions 16 embrace the flanges 13 so that the base plate may be swungfrom the sup porting position shown in Figure 3 to the folded positionshown in Figure 6 in which it is nested within the supporting plates 11.

The lens plate 12 has marginal portions at opposite sides thereof turnedangularly downward to provide in a similar manner stiffening flanges 18extended one end as at 19 for pivotal connection with the extendedflange portions 17 of the supporting plate 11. The lens plate is formedwith an opening through which is inserted one end of a sheet metalthimble 20 having a shoulder 21 seated on the plate 12 adjacent theopening, the end of the thimble being rolled over as shown at 22' tosecure the thimble in lace. The lens 23 is seated at its periphery onthe shoulder portion of the thimble the upper end 24 of which is rolledover against a washer 25 hearing yieldingly on the upper surface of thelens to secure it in its mounting. The lens plate may be swung from theposition of use shown in Figure to the folded position shown in Figure 6in which the lens is nested within the flanges 13 of the base plate andprotected on one side by the latter and the supporting plate 11. In thisposition the lens lies inwardly of the flange of its supporting plate 12and is protected on the other side by the latter and flanges 18 thereof,the parts occupying the comp-act parallel relation shown in Figures 5and 6.

In addition to the flange parts described above there is preferablyprovided, also, a cover plate 26 having angular-1y turned flanges 27 atopposite sides thereof which latter are received at one end andpivotally connected at 28 as hereafter described to the flanges 18 ofthe lens plate at a point adjacent the supporting plate 11 as shown. inthe position or use shown in Figure 3, the lower end of the cover platerests upon the flanges 13 and serves as a strut to additionally supportthe lens plate. in folded position the cover plate 26 lies over theouter surface of the lens, as shown in Figures 5 and 6, to further protct the latter, the cover plate in this position being CO1 ipactlyreceived within the lianges of the lens plate.

An advantageous term of pivotal connection is provided for the severalplates by recessing or punching out a portion of a flange or one'as forexample the flange e2;- tension 19 of the lens plate, l igures l and 7,and pressing out a projection or trunnion 29 in the cooperating flangeextension 17 ot the supporting plate, by means oi? which the connectionis formed entirely from the material or the plates themselves and insuch a manner that the cooperating members may be sprung into place inassembly by a slight flexing or the plates.

\Vhen in position for use, the body of the supporting plate ll rests atits lower edge on the flanges l3 oithe base plate by means of which theplate 11 is rigidly supported in vertical position. Similarly the bodyof the lens plate 12 rests upon the upper edge of the body or" thesupporting plate 11 and is also supported by the cover plate as alreadydescribed. The latter may if desired have its surface silvered orotherwise prepared to aliord a reflecting surface to assist inilluminating the object under examination. From such position in use theparts may be com pactly tolded as described by first swinging the baseplate against the back of the supporting plate and then the lens plateagainst the base plate, with the cover plate against the lens which isthus completely enclosed and protected. The frame parts are all soconstructed that they may be readily and economically formed fromrelatively light sheet metal which is rendered sutliciently still forall practical purposes however by the reinforcing flanges which latterprovide also for the advantageous pivotal connections described above.

I claim as my invention:

1. A magnifying glass comprising a base plate, a supporting plate and alens plate each formed of relatively thin sheet metal with angularlyturned flanges at opposite sides thereoi i'or stillening the same, meanspivotally connecting the flanges of said base and lens plate to theflanges of said supporting plate and arranged to provide for the foldingof said plates into compact parallel relation, lens means mounted insaid lens plate and a plate pivot-ally connected with said lens platefor movement to an extended position in supporting engagement with saidbase plate and also to a folded position to cover and protect said lensmeans.

2. A magnifying glass comprising a base plate, a supporting plate and alens plate pivotally connected to swing substantially into parallelrelation, a lens carried by said lens plate and a cover for the lenscarried by one of said plates and movable relative thereto intoprotecting position with respect to said lens.

A magnifying glass comprising a base plate, a supporting plate and alens plate pivotally connected to swing substantially into parallelrelation. a lens carried by said lens plate and a cover for the lenspivoted upon the lens plate and adapted when the latter is in operatingposition to engage the base plate to form a brace for the supportingplate.

l. A magnifying glass comprising a base plate, a supporting plate and alens plate, each having a pair of flanged portions at opposite sidesthereof, the flanged portions of the base plate and the flanged portionsoi the lens plate being pivotally connected with the flanged portions ofthe supporting plate to permit said plates to swing substantially intoparallel relation, lens means carried by said lens plate and a memberpivoted upon one of said plates to form a cover for the lens means.

EDWARD BAUSCH.

